Same here, GTX 570. Was on 306, but tried the betas released so far too (selected the clean install option each time). For the sake of saying it, this definitely isn't the only issue I've been encountering in the game, just the most consistent. It's been a matter of when this problem was going to happen, not if.

Same here. GTX 580 MSI TWINFORZER with i5 3570k 8 GB running from SSD. Everything is supposed to work like with BF3 and MOH. But this game just randomly crashes. Have the latest 310 drivers from Nvidia but seems to crash at random points. Please fix PCDEV, this is unexpected from a company so big.

EDIT:

The 'underclock your GFX (570 or 580) with 100 Mhz (to a maximum of 700 MHZ) seems to work indeed. Never played that long without crashing at all. i think it was an hour of 3. MP and zombies.